ArianaBrande ArianaBrande
  • 12-03-2018
  • Mathematics
contestada

Find the first term of the arithmetic sequence in which t22=1008 and d= -8

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dizonc009
dizonc009 dizonc009
  • 12-03-2018
tn = nth term
t22 = 22nd term
d = common difference
d = -8
n = number of terms
n = 22
.
tn = t1 + (n - 1)d
t22 = t1 + (n - 1)d
1008 = t1 + (22 - 1)-8
1008 = t1 + (21)-8
1008 = t1 + 168
1008 - 168 = t1
840 = t1
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shresthasusan44
shresthasusan44 shresthasusan44
  • 12-03-2018
you misunderstood lol
Ver imagen shresthasusan44
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